Valve mechanism



C. J. SMITH VALVE MECHANI SM Oef. 6, 1931.

Filed April 5, 1927 unmn i INVENTOR @V0/6 J 5mm Patented Oct. 1931 umriss STATES PATENT OFFICE CLYDE J'. SMITH, OF DETROIT, MICHIGAN, .ASSIGNOR T0 MORGAN & 'WRIGHT, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN i VALVE MEcHANIsM Application l'ed April `5, 1927. Serial No. 181,046.

. 'lo closing fluid communication of the conduits with the atmosphere.

Further objects of this invention will appear from a consideration of the following specification taken in connection with the v-ac- -companyin-g drawings, in which:

Fig. 1 is a part longitudinalsection of the device showing one fof the valves in 'its open position;

Fig. 2 is a part longitudinal section 'show- 20 ing a second valve open, the previously opened valve beingclosed; 1

Fig. 3 is a part longitudinal section :showing the lirst and third valve open, .the second being closed;

Fig. 4 is a transverse section through the 'open valve shownin Fig. 1 taken along the `section line IV-IV of Fig. 1;

Fig. 5 is 4a transverse section through the second open valve shown in Fig. 2 ytaken along the section line V-V of Fig. 2 and Fig. 6 is a transverse Vsection through the last lopen valve shown in 3, taken along the sectionrline Vl-Vl of Fig. 3.

This device is primarily intended for nse in connection withV the vacuous shaping et flat built `casings and the arrangement 'fthe-reof suitable for such luse as disclosed in Patent No. 1,635,243,issuedJuly12. 1927.

Referring particularly tothe drawings, the Adevice kcomprises a box 1 havin-g top andv bottomr walls, end walls 2 -and 3, and side. walls 4 and 5. The interior of th'ebox is divided into three `compartments 6,37 Aand 8. 'Corn- -partment A6 isor'med by the end wal-l 2, by

.45. a portion off the "top and bottom walls and by` a partition extending laterally across-the box which comprises a` wall 9 depending from ythe Ytop iwall gof 4.the boxfa wall 10 projecting :from the bottom wall of the -box -a wall .1.1 extending between'the walls .9 and'lO, as

Athe bottom wall of the box and .a wall 13 which is connected to the walls 10 .and 12. 55 The chamber 8 constitutes the remainder Aot the interior of .the box 1. A pipe 14 is .sec-ured to the end wall 3 of the box and opens into the chamber 8 forming a primary conduit. This pipe, in the preferred use of the '1go valve control mechanism, is designed to be connected to a source .of suction. Pipes 15 and 16 are secured to the side walls 4 and 5 respectively of the box and open into the chamber 7 forming a secondary conduit. w65 Pipes 15 and 16., .in the preferred use to which the device is to be put, are each designed .to be -f-connectedto a closed fluid system. Apipe 1'.'

is vsecured to the end wall 2 of the box and vopens .into the chamber Gtorming asecond-:ZQ

ary conduit. This pipe, also in the preferred use of the device, is designed .to be connected to a closed Huid system. f

lCommunifoation between chambers 6 and .8

, is established by a hole in the wall 1l..` This; 15 h'ole is opened andclosed by a valve comprising a valve -disc18 which is adapted toseat .against the wall 11 and .is carri-ed .by a valve stem 11), as particularly shown in FigaG.` A

. projection 20-extendingdownwardly from the.y n0

:top wall of the box functions with the wall .to provide abearing through which the valve stem passes to--theexterior of the box. A disc 21`is secured-to the valve stem in spaced rela- :tion tothe top Wall of -the box and is adapted-5 as to be engaged by one-end of a coiled spring .22, .the-opposite end of which bears against a ywearplate 23 which is fixed to 'the top wall of the box.` The pressure of the .spring22 normally maintains the valve disc seated.; 90 Communication vbetween chambers 7 and 8 'is provided by a hole through the wall 13. A valve is provided to open and close comm unication through this hole, .said valve -com prising a valve disc .24 which is designed to seat against the Wall V13 .and is carried by a valve stem 25. A thickened guide portion '26 projects downwardly from the top wall of the box and is provided with an opening through which the valve stern protrudes ex-` .100

y'the'109m shown in Figs,y

" 'term Ik I the other'md kof which seats gairist u (gf/'v 5 'a wm pme 29poieionedfupontheftop wm ,fvenfionflmsbc' as npphedto f a: mech ams 1h' yum the: Second-fft1me.`

connected, in a second position the auxiliary Chambers are open to the atmosphere, and in a third position both of the auxiliary charners are interconnected With the main chain- Signed at Detroit, county of Wayne, State of Michigan, this lst day of April, 1927.

CLYDE J. SMITH. 

